Bather Load; Filter Cleaning - Cal Spas F-168 Owner's Manual

4.4 Bather Load

"Bather Load" is the term used to describe the number of people using a spa, combined with the length of
usage, and the frequency of usage. All these factors have a great effect on the spa water. The higher the
bather load, the more chemicals need to be added and a longer filtration time will be needed.
Recommendations are designed for spas with average bather load (3 to 4 people, 15 minutes of usage,
three times a week at 100 degrees). If your bather load exceeds these guidelines, and you experience
water quality problems, increase the amount of filtration first, (go to the next higher filtration number)
then if water quality is still not adequate, consult the advice of your Cal Spas dealer for additional
chemical or system recommendations. Be sure to give them your bather load information.

4.5 Filter Cleaning

The filter is the part of your spa that removes the debris from the water and needs to be cleaned on a
regular basis to maximize your spa's filtering performance and heating efficiency.
In addition to spraying off the filter weekly to remove surface debris, your filter should be deep cleaned
periodically to dissolve scale and particles that get lodged deep within the filter fibers and impede the
filtration process. Even if the filter resulting in the most common spa problem —no heat, caused by a dirty
filter.
We recommend you clean your filter once a
month and replace it one a year or as necessary.
It is extremely important that you never run the spa without a filter. There is a possibility that debris may
be sucked into the plumbing through the filter well.
Cleaning the filter
1. Remove the filter by unscrewing it and pulling it up and out.
2. Place the dirty filter into a bucket of water deep enough to cover the filter. Add 8oz. of liquid filter
cleaner to the bucket of water
Add two ounces of oxidizer shock per 500 gallons
once a week, after heavy bather loads or if water has
strong odor.
Follow the maintenance schedule onpage 91.
30 minutes with the cover open. If necessary,
repeat oxidizer shock in 30 minute intervals.
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